نتایج جستجو برای: shear failure

تعداد نتایج: 439684  

2017
Muhe Liu Jiliang Liu Guangming Qiu Gang Wang Mingjin Chu

The result showed that the brittle failure was extinct, and the new-type shear walls had good deformability whose ductility factors were over 4.3. The axial compression ratio had significant influence on the mechanical properties of the new-type shear walls. As the increscent of the axial compression ratio, the shear capacity and initial stiffness were improved, but the energy-dissipating capac...

2010
R. S. Londhe

Results of an experimental investigation on the behavior and ultimate shear capacity of 27 reinforced concrete Transfer (deep) beams are summarized. The main variables were percent longitudinal (tension) steel (0.28 to 0.60%), percent horizontal web steel (0.60 to 2.40%), percent vertical steel (0.50 to 2.25%), percent orthogonal web steel, shear span-to-depth ratio (1.10 to 3.20) and cube conc...

2008
Ping Zheng Alberez Wiggins R. Wayne Johnson Robert V. Frampton Steven J. Adam Leora Peltz

AuSi, patterned Au and off-eutectic Sn-Au-Sn die attach materials and processes have been investigated for SiC die attach for high temperature applications. AuSi shear test results after 3000 hours of aging at 325C in air showed only a slight decrease in shear strength when assembled on Mo:Mn/Pd/Au metallized AlN. However, when assembled on Mo:Mn/Ni/Au metallized AlN, the die shear strength dec...

Journal: :Journal of biomechanics 2009
Arthur J Michalek Mark R Buckley Lawrence J Bonassar Itai Cohen James C Iatridis

Shear strain has been implicated as an initiator of intervertebral disc anulus failure, however a clear, multi-scale picture of how shear strain affects the tissue microstructure has been lacking. The purposes of this study were to measure microscale deformations in anulus tissue under dynamic shear in two orientations, and to determine the role of elastin in regulating these deformations. Bovi...

Journal: :The Journal of arthroplasty 1987
D J Bean F R Convery S L Woo R L Lieber

Many investigators consider the polymethylmethacrylate-bone interface the weakest link in the bone-cement-implant system. Push-out tests, frequently used for in vitro evaluation of the bone-cement interface, produced inconsistent results of shear strength. Therefore, a more reliable model for testing the shear failure of the interface was developed. Better understanding of intrinsic variations ...

ژورنال: مجله دندانپزشکی 2009
جعفرزاده کاشی, طاهره سادات, عرفان, محمد, نزادی نیاسر, الهیار,

Background and Aim: Evaluation of shear bond strength and microleakage of bonding agents is important as these properties play main roles in adhesion of composite to dental tissues. Microleakage results in bacterial penetration into dentin tubules and enamel surfaces and causes sensitivity and recurrent caries followed by destruction of composite filling. Insufficient shear bond strength result...

Journal: :journal of advanced materials and processing 0
mehdi safari arak university of technology hossein mostaan arak university

in this paper, dissimilar resistance spot welding of aisi 1075 eutectoid steel to aisi 201 stainless steel is investigated experimentally. for this purpose, the experiments are designed using response surface methodology and based on four-factor, five-level central composite design. the effects of process parameters such as welding current, welding time, cooling time and electrode force are inv...

Journal: :Acta of bioengineering and biomechanics 2016
Alicja Porenczuk Piotr Firlej Grażyna Szczepańska Adam Kolenda Dorota Olczak-Kowalczyk

PURPOSE More than half of the cavity restorations are replaced due to bacterial microleakage. A need for disinfection agents arises. Application of silver nanoparticles (AgNPs) may be beneficial, yet their impact on the adhesives' shear bond strength to dentin remains unknown. METHODS The aim was to assess the shear bond strength to dentin of different dental materials combined with AgNPs. Fa...

Journal: :JPMA. The Journal of the Pakistan Medical Association 1984
A Shahid H Qureshi S J Zuberi

Renal failure is a frequent complication in advanced liver disease (Conn, 1973; Papper, 1978). Gastrointestinal bleeding and forced diuresis may be the causes in fulminant hepalic. failure and cirrhosis (Hecker and Sherlock, 1956; Shear et al., 1965). Hepatic coma or an associated metabolic abnormality may affect renal function or aggravate pre-existing renal abnormalities in severe liver disea...

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